laravel4 composer install got proc_open not available error

Question

Now I am trying to use composer to install my php package but I got this error message: $ composer install

Loading composer repositories with package informa         


        

Answer 1

Edit your php.ini file and search for the line

disable_functions = pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait...

It should be disabled there and you must enabled it. This a security precaution.